Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for variably adjusting voltage of ldc for hybrid vehicle

a hybrid vehicle and output voltage technology, applied in battery/fuel cell control arrangement, process and machine control, instruments, etc., can solve the problems of reducing the lifespan of the ldc, reducing the efficiency reducing the lifespan so as to improve the durability of the auxiliary battery and the auxiliary battery. , the effect of improving the durability of the auxiliary battery and the auxiliary battery

Active Publication Date: 2016-05-05
HYUNDAI MOTOR CO LTD +1
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method and system for adjusting voltage of a low-voltage DC (LDC) for a hybrid vehicle. The invention determines the LDC output voltage control mode based on three primary driving modes and the state of charge (SOC) of the battery. By doing so, the LDC power consumption and the auxiliary battery power consumption are minimized, resulting in improved fuel efficiency. Additionally, a LDC output voltage order table may be generated based on driving mode and battery SOC, further improving energy usage. The high electric loads are separated into groups and different priorities are assigned to them based on battery durability. The result is a more efficient use of power and better overall performance of the vehicle.

Problems solved by technology

Thus, the charge efficiency of the auxiliary battery decreases and a fuel efficiency effect may be difficult to improve.
As a result, the lifespan of the LDC may decrease and durability of the LDC may be degraded.
In particular, during the LDC output voltage control mode, the LDC output voltage order may be alternately controlled to increase and decrease based on the change of the driving mode without detecting the charge status of the auxiliary battery, thus causing ineffective influence on the fuel efficiency such as increased consumed energy of the LDC.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for variably adjusting voltage of ldc for hybrid vehicle
  • Method and system for variably adjusting voltage of ldc for hybrid vehicle
  • Method and system for variably adjusting voltage of ldc for hybrid vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027]It is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example both gasoline-powered and electric-powered vehicles.

[0028]Although exemplary embodiment is described as using a plurality of units to perform the exemplary process, it is understood that the exemplary processes may also be performed by one or plurality of modules. Additionally, it is understood that the term controller / control unit refers to a hardware devi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method and system are provided for variably adjusted voltage of the LDC applied with an IBS (Intelligent Battery Sensor). The LDC output voltage control mode is determined in each of three driving modes, and the high electric loads are separated into two or more groups. The LDC output voltage value and the order priority are differentiated based on the durability of the auxiliary battery. Additionally, an LDC output voltage order table is generated according to the driving mode and the SOC state based on the auxiliary battery SOC information obtained from an IBS. Thus, consumed energy of the LDC and an energy consumption amount of the auxiliary battery are minimized, thus improving fuel efficiency.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims under 35 U. S. C. §119(a) the benefit of Korean Patent Application No. 10-2014-0152617 filed on Nov. 5, 2014, the entire contents of which are incorporated herein by reference.BACKGROUND[0002](a) Technical Field[0003]The present invention relates to a method and system for variably adjusting output voltage of a LDC for a hybrid vehicle, and more particularly, to a method and system for variably adjusting voltage of the LDC by applying an intelligent battery system (IBS) to the hybrid vehicle.[0004](b) Background Art[0005]In general, a low voltage direct current-direct current (DC-DC) converter (LDC) is a device that switches direct current to be converted into alternating current (AC), increases or decreases the alternating current using coils, transformers, capacitors, etc., and rectifies the increased or decreased alternating current to be converted into the direct current again. The LDC installed within the hybri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): B60L7/16B60L11/10B60L50/14B60L50/16
CPCB60L7/16Y10S903/903B60W20/20B60L11/10B60W10/26B60W2510/0614B60W2510/085B60W2520/10B60W2540/10B60W2540/16B60W2710/242B60L58/20Y02T10/70B60W20/00Y02T10/62Y02T10/7072
Inventor SHIN, DONG JUNCHOI, YONG KAKNOH, SOUNG HANHWANG, HWANPARK, JUN YEONRYU, CHANG RYEOL
Owner HYUNDAI MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com